From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shravan Mishra Subject: Re: Date: Wed, 17 Oct 2012 11:18:04 -0400 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 To: netdev@vger.kernel.org Return-path: Received: from mail-ie0-f174.google.com ([209.85.223.174]:53816 "EHLO mail-ie0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752794Ab2JQPSE (ORCPT ); Wed, 17 Oct 2012 11:18:04 -0400 Received: by mail-ie0-f174.google.com with SMTP id k13so11975922iea.19 for ; Wed, 17 Oct 2012 08:18:04 -0700 (PDT) In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Wed, Oct 17, 2012 at 11:16 AM, Shravan Mishra wrote: > > Hi, > > Is there a way to simulate delayed acknowlegement such that in my packet > trace I see it getting triggered. > > I'm using 3.2.31 linux kernel. > > I don't see any sysctl parameter for doing this. > > I checked HZ on my box using sysconf(_SC_CLK_TICK) it shows 100. > > Under tcp.h > > TCP_DELACK_MIN - HZ/25 > > which means that my delayed ack timeout will be 40ms. > > How can I see this ? > > Currently I see tcp acks well within the above bounds. > > > Sincerely > Shravan